28101920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2281}}^1$

素因数の和:2314

約数の個数: 96

約数和(自身を含む): 82809216

約数和(自身を除く): 54707296

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 352, 385, 440, 560, 616, 770, 880, 1120, 1232, 1540, 1760, 2281, 2464, 3080, 4562, 6160, 9124, 11405, 12320, 15967, 18248, 22810, 25091, 31934, 36496, 45620, 50182, 63868, 72992, 79835, 91240, 100364, 125455, 127736, 159670, 175637, 182480, 200728, 250910, 255472, 319340, 351274, 364960, 401456, 501820, 510944, 638680, 702548, 802912, 878185, 1003640, 1277360, 1405096, 1756370, 2007280, 2554720, 2810192, 3512740, 4014560, 5620384, 7025480, 14050960, 28101920]

約数ペア:

[(1, 28101920), (2, 14050960), (4, 7025480), (5, 5620384), (7, 4014560), (8, 3512740), (10, 2810192), (11, 2554720), (14, 2007280), (16, 1756370), (20, 1405096), (22, 1277360), (28, 1003640), (32, 878185), (35, 802912), (40, 702548), (44, 638680), (55, 510944), (56, 501820), (70, 401456), (77, 364960), (80, 351274), (88, 319340), (110, 255472), (112, 250910), (140, 200728), (154, 182480), (160, 175637), (176, 159670), (220, 127736), (224, 125455), (280, 100364), (308, 91240), (352, 79835), (385, 72992), (440, 63868), (560, 50182), (616, 45620), (770, 36496), (880, 31934), (1120, 25091), (1232, 22810), (1540, 18248), (1760, 15967), (2281, 12320), (2464, 11405), (3080, 9124), (4562, 6160)]